# SIG_ERR

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< cpp‎ | utility‎ | program

Defined in header `<csignal>` |  |
#define SIG_ERR /* implementation defined */ |  |

A value of type void (*)(int). When returned by std::signal, indicates that an error has occurred.

### See also

signal | sets a signal handler for particular signal (function)
C documentation for SIG_ERR

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